At what age should I choose the registration colour?

For Havanese, the time when a puppy is new born to a few weeks of age is when the colours tend to be most intense and the patterns are most easily discernible. This is often the best time to select the registration colour.
If you are registering or acquiring an older puppy or importing one, then you would be guided by the colour on the foreign pedigree and/or the colour the dog is at the time you register it here in Canada.